[PATCH] contrib/rdmacm-mux: Fix error condition in hash_tbl_search_fd_by_ifid()

[AlexChen]

When fd is not found according to ifid, the _hash_tbl_search_fd_by_ifid()
returns 0 and assigns the result to *fd, so We have to check that *fd is 0,
not that fd is 0.

Reported-by: Euler Robot <euler.robot@huawei.com>
Signed-off-by: AlexChen <alex.chen@huawei.com>
---
 contrib/rdmacm-mux/main.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/contrib/rdmacm-mux/main.c b/contrib/rdmacm-mux/main.c
index bd82abbad3..771ca01e03 100644
--- a/contrib/rdmacm-mux/main.c
+++ b/contrib/rdmacm-mux/main.c
@@ -186,7 +186,7 @@ static int hash_tbl_search_fd_by_ifid(int *fd, __be64 
*gid_ifid)
     *fd = _hash_tbl_search_fd_by_ifid(gid_ifid);
     pthread_rwlock_unlock(&server.lock);

-    if (!fd) {
+    if (!*fd) {
         syslog(LOG_WARNING, "Can't find matching for ifid 0x%llx\n", 
*gid_ifid);
         return -ENOENT;
     }
-- 
2.19.1